All data exploited in this study were obtained by the Parker Solar Probe (PSP) [1]}. Data include magnetic field components in the Radial Tangential Normal (R,T,N) coordinates with respect to the spacecraft (provided by the FIELDS instrument, [2]}). Electron density and core temperature are provided by the Quasi-Thermal-Noise spectroscopy [3]} applied to FIELDS data [4]}. Proton speeds were measured by the Solar Probe Cup (SPC), which is part of the Solar Wind Electrons Alphas and Protons (SWEAP) instrument [5]}.
<FIGURE>